Two-beam interferometry and density methods previously measured are used to study the changes in optical properties of annealed and cold drawn polyester (PET) fibers. Some structural parameters in the present work are determined, such as form birefringence, the number of molecules per unit volume, t
Optothermal properties of fibers. I. Relations between optical properties and change of the density and mechanical loss factor for annealed polyester fibers
โ Scribed by A. A. Hamza; I. M. Fouda; M. M. El-Tonsy; F. M. El-Sharkawy
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 770 KB
- Volume
- 56
- Category
- Article
- ISSN
- 0021-8995
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๐ SIMILAR VOLUMES
In this work, changes in the structure of polyester [poly(ethylene-terephtalate) (PET)] fibers after annealing at constant temperature (120 and 140ะC) and different times were studied interferometrically. The density of annealed PET fibers were measured by a system based on vibrating string. The Plu
The structure developed of annealed Egyptain poly(ethyleneterephthalate) (PET) fibers is studied interferometerically due to the drawing process. Using a twobeam Pluta polarizing interference microscope connected to a device to dynamically study the draw ratio with the birefringence changes, the rel